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Table C.6

HFS constants for five Ba II levels, for isotopes with non-zero nuclear spin.

E(eV) A135 B135 A137 B137 Level Reference
0.000 0.1198 0.0 0.1341 0.0 6s 2S Becker et al. (1981)
0.604 0.0057 0.0010 0.0063 0.0015 5d 2D Silverans et al. (1986)
0.704 −0.0004 0.0013 −0.0004 0.0020 5d 2D Silverans et al. (1986)
2.512 0.0222 0.0 0.0248 0.0 6p 2P Villemoes et al. (1993)
2.722 0.0038 0.002 0.0042 0.0031 6p 2P Villemoes et al. (1993)

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